C语言练习题-选择题(带答案).doc

1. CDA:S.bsumaverage_aboveB:classdaylotus_12dayC:#md&12xmonthstudent_n!D:D56r_1_2name_st_12. Cmain(),(C ).A: B: C:()D:3. C,C( B ).A: B: C: D:4. ,#include( C ).A:ctype.h B:string.h C:stdio.h D:math.h5. CA:0 B:5L C:o13 D:98616. C,( C ).A:a=b=c; B:; C:break D:b=3*5,a*=4;7. CBA:a3_b3 B:void C:_123 D:IF8. C(C ).A: B: C: D:9. CBA: B: C: D:10. #define N 3#define Y(n) (N+1)*n)z=2*(N+Y(5+1);z(B ).A:42 B:48 C:54 D:11C,1008ASCII,( B ).A:2 B:4 C:1 D:512(C ).A:if B:a*b C:If D:8pq13 char a=101; ,a(D ).A:4 B:2 C:3 D:114 ( C).A:c B: C:W D:ab15main( A ).A: B: C: D:16float,scanf(%f %f %f ,&a,&b,&c);a10.0,b22.0,c33.0,( B ).A:102233 B:10.0,22.0,33.0 C:10.022.0 33.017 (B )C.A:Float B:signed C:integer D:Char18,C( D ).A:VAR B:cher C:integer D:default19scanf(x=%f,y=%f,&x,&y);x,y(),( C). A:1.25,2.4 B:1.252.4 C:x=1.25,y=2.4 D:x=1.25y=2.420#define p(x,y,z) x=y*z;p(a,x+5,y-3.1)( A ).A:a=x+5*y-3.1;B:a=(x+5)*(y-3.1);C:a=x+5*y-3.1D:a=(x+5)*(y-3.1)A21 1.0 :919( A ).int x=10;int y=x+;printf(%d,%d,(x+,y),y+);A:11,10B:11,11C:10,10D:10,11A22 1.0 :925C( A ).A:2yB:a_1_2C:ablexeD:_xA23 1.0 :914C,( B ).A:0XffB:1.2e0.5C:2LD:72B24 1.0 :918(B ).#includemain() printf(%d,NULL); A:0B:C:-1D:1B25 1.0 :930C,1,( A ).A:B:C:1D:1A26 1.0 :927C( A ).A:B:C:D:A27 1.0 :922,0x1011(C ).A:8B:C:16D:2C28 1.0 :928x,y int ,z double , scanf ( D ).A:scanf(%d%d,%lf,&x,&y,&z);B:scanf(%x,%d,%lf,&x,&y,&z);C:scanf(%d,%x,%lf,&x,&y,&z);D:scanf(%d,%d,%x,&x,&y,&z);D29 1.0 :931,( A ).A:0xa2B:65C:$D:x2aA30 1.0 :912,( C ).a=2;b=3;printf(ab?*a=%d:#b=%d,a,b);A:B:*a=2C:#b=2D: *a=2#b=3C31 1.0 :929,( A ).A:PutcharB:-doubleC:A123-D:intA32 1.0 :923,8( C ).A:%dB:%8dC:%oD:%1dC33 1.0 :936( D ).A:,:scanf(%f,3.5);B:,:scanf(a=%d ,b=%d);C:,:scanf(%4.2f,&d);D:,:scanf(%f,&f);D34 1.0 :926C(char)( D ).A:B:C:D:ASCIID35 1.0 :946axb( B ).A:a=x=a&x=a|xbD:!(x=b)B36 1.0 :939w=1,x=2,y=3,z=4,wx?w:yz?y:z( D ).A:4B:3C:2D:1D37 1.0 :938( A ).main() int x=0.5; char z=a;printf(%dn, (x&1)&(zz) ); A:0B:1C:2D:3A38 1.0 :964C,( A ).A:B:C:(=)D:A39 1.0 :947( C ).main() int x=10,y=3;printf(%dn,x/y);A:0B:1C:3D:C40 1.0 :944( A ).int a=11,b=12,c=13,s;s=a+=10&b-y-?x:y( D ).A:4B:1C:2D:3D43 1.0 :954k=5|3;,k( C ).A:1B:8C:7D:2C44 1.0 :958int a=3,b=4;printf(%d,%d,(a,b),(b,a);(B ).A:3,4B:4,3C:3,3D:4,4B45 1.0 :9552x5C( C ).A:(x=2) (x=2) AND (x=2)&(x=5)D:(2x) AND (x5)C46 1.0 :962int a =15;a=A&ch=Z)?(ch+32):ch( B ).A:AB:aC:ZD:zB57 1.0 :949gc,( C ).A:c=147B:c=147C:c=147D:c=0147C58 1.0 :959 int x=1, y=1; (!x|y-)( B ).A:0B:1C:2D:-1B59 1.0 :951x=y=zC(A ).A:(x=y) & (y=z)B:(x=y) and (y=z)C:(x=y=z)D:(x=y) & (yb?(bc?1:0):0;(A)A:if(ab)&(bc) k=1;else k=0;B:if(ab)|(bc) k=1;else k=0;C:if(a=b) k=0;else if(bb) k=1;else if(bc) k=1;else k=0;A66 1.0 :969(D )int i=-1;if(i=0)printf(*n);else printf(%n);A:*CB:%C:%CD:*D67 1.0 :986kint,:k=-3if(kb) s=b;s=s*s;printf(%dn,s);A:9B:16C:3D:4A69 1.0 :980main()int a,b,d=25;a=d/10%9;b=a&(-1);printf(%d,%dn,a,b);(B)A:6,1B:2,1C:6,0D:2,0B70 1.0 :984#includemain() int a,b,c=246;a=c/100%9;b=(-1)&(-1);printf(%d,%dn,a,b); (A)A:2,1B:3,2C:4,3D:2,-1A71 1.0 :983, (D)A:if(a) printf(%dn,x); else printf(%dn,y);B:if(a=0) printf(%dn,y); else printf(%dn,x);C:if (a!=0) printf(%dn,x); else printf(%dn,y);D:if(a=0) printf(%dn,x); else printf(%dn,y);D72 1.0 :972,xya,b_C_.A:if(xy)a=x;b=y;else a=y;b=x;B:if(xy)a=x;b=y; else a=y;b=x;C:if(xy)a=x;b=y;elsea=y;b=x;D:if(xy)a=x;b=y;else (xb)if(cd)x = 1;else x = 2; (C)A:if(ab)if(cd)x = 1;else x = 2;B:if(ab)if(cd)x = 1;elsex = 2;C:if(ab)& (cd)x = 1;elsex = 2;D:if(ad)x = 1;C74 1.0 :976,ab( C )A:if(ab)printf(%dn,a);printf(%dn,b);B:printf(%dn,b);if(ab) printf(%dn,a);C:if(ab)printf(%dn,a);else printf(%dn,b);D:if(a5) printf(%dn,a);else printf(%dn,-a);A:6B:7C:5D:4D76 1.0 :979k=ab?(bc?1:0):0;(A)A:if(ab)&(bC)k=l;else k=0;B:if(ab)(bC)k=l;else k=O;C:if(a=b)k=0;else if(bb)k=1,else if(bC)k=l;else k=0;A77 1.0 :985 (D)main( ) int a=-1,b=4,k;k=(+ +a0)&!(b - -=0);printf(%d%d%dn,k,a,b); A:104B:103C:3D:4D78 1.0 :981main() int i=1,j=2,k=3;if(i+=1&(+j=3|k+=3)printf(%d %d %dn,i,j,k); (D)A:1 2 3B:2 3 4C:2 2 3D:2 3 3D79 1.0 :977int a=1,b=2,c=3; CA:if(ab) c=a,a=b,b=c;B:if(ab) c=a,a=b,b=c;C:if(ab) c=a;a=b;b=c;D:if(ab) c=a;a=b;b=c;C80 1.0 :968Cif_D_.A:B:C:D:D81 1.0 :975main()int a=2,b=-1,c=2;if(ab)if(b0)c=0;else c+;printf(%dn,c);( C )A:0B:1C:2D:3C82 1.0 :978main() float x=2.0,y;if(x10.0)y=1.0/x;else y=1.0;printf(%fn,y);(D)A:0.000000B:0.250000C:0.500000D:1.000000D83 1.0 :967_C_C?A:B:C:D:C84 1.0 :982main()int a=3,b=4,c=5,d=2;if(ab)if(bc)printf(%d,d+ +1);elseprintf(%d,+d +1);printf(%dn,d); (A)A:2B:3C:43D:44A85 1.0 :1005main()int i,sum;for(i=l;i=3;sum+)sum+=i;printf(%dn,sum);( C )A:6B:3C:D:0C86 1.0 :1013int n=0,p;doscanf(%d,&p);n+;while(p!=12345&n0)&(x5);x+,y-);A:B:C:4D:3D89 1.0 :992k,while( C ).k=10;while(k=0) k=k-1;A:10B:C:D:C90 1.0 :1018C3( A )A:B:if,switch,breakC:for,while,do-whileD:if,for,continueA91 1.0 :1002forwhiledo-while( D )A:B:C:D:D92 1.0 :1016(A)main( )int a=1,b=0;do switch(a) case 1: b=1;break;case 2: b=2; break;default : b=0;b=a+b;while(!b);printf(a=%d,b=%d n,a,b);A:a=1,b=2B:a=1,b=1C:a=1,b=0D:a=1,b=3A93 1.0 :1015int f(int n)if (n=1) return 1;else return f(n-1)+1;main() int i,j=0;for(i=1;ij( D )main() int i=0,j=10,k=2,s=0;for(;) i+=k;if(ij) printf(%d,s);break;s+=i;A:4B:7C:5D:6D96 1.0 :997 int i=1;while(i+4),i_C_A:3B:4C:5D:6C97 1.0 :988,( A).A:forB:whileC:doD:switchA98 1.0 :993: for (i=1;i+4;);,i( C ).A:3B:4C:5D:C99 1.0 :1009,sabc,ac(c0):s=a;for(b=1;b=c;b+)s=s+1;( B ).A:s=a+b;B:s=a+c;C:s=s+c;D:s=b+c;B100 1.0 :994_C_.main() int i, j;for(i=0,j=1; i1;i-)for(j=0;ji;j+)A:20B:261C:15D:25A102 1.0 :996( D )A:while(x=y)5;B:while(0);C:do 2;while(x= =B.D:do x+while(x= =10)D103 1.0 :1010main() int k=4,n=0;for( ;